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CVE-2025-8078

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CVE-2025-8078

Published: Oct 21, 2025

Modified: Feb 26, 2026

PUBLISHED

CVSS v3.1

7.2

HIGH

Description

A post-authentication command injection vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.40, USG FLEX series firmware versions from V4.50 through V5.40, USG FLEX 50(W) series firmware versions from V4.16 through V5.40, and USG20(W)-VPN series firmware versions from V4.16 through V5.40 could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on the affected device by passing a crafted string as an argument to a CLI command.

VendorProductVersions

Zyxel

ATP series firmware

affected
versions from V4.32 through V5.40

Zyxel

USG FLEX series firmware

affected
version from V4.50 through V5.40

Zyxel

USG FLEX 50(W) series firmware

affected
versions from V4.16 through V5.40

Zyxel

USG20(W)-VPN series firmware

affected
versions from V4.16 through V5.40

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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